package com.fengdi.publicObject;

public class TreeNode {
     public int val;
     public TreeNode left;
     public TreeNode right;

     public TreeNode() {}

     public TreeNode(int val) { this.val = val; }

     public TreeNode(int val, TreeNode left, TreeNode right) {
         this.val = val;
         this.left = left;
         this.right = right;
     }
}
